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Journal ArticleDOI

The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales

30 Jan 1986-Chemical Geology (Elsevier)-Vol. 54, pp 149-155
TL;DR: In this article, a chromium reduction method was used for the determination of reduced inorganic sulfur compounds (pyrite + elemental sulfur + acid volatile monosulfides) in modern sediments and shales.
About: This article is published in Chemical Geology.The article was published on 1986-01-30. It has received 1268 citations till now. The article focuses on the topics: Sulfur & Chromium.
Citations
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Journal ArticleDOI

1,235 citations

Journal ArticleDOI
TL;DR: In this paper, the authors developed a multiproxy technique for assessing redox facies in black shale samples: euxinic conditions were considered to have existed if at least two of four trace-indicator trace elements (Mo, U, V, Zn, and Pb), and nonsulfidic anoxic conditions were inferred otherwise.

1,209 citations


Cites methods from "The use of chromium reduction in th..."

  • ...Although calculation of DOP values requires determination of acid-soluble Fe and sulfide S concentrations via the chromium reduction method (Canfield et al., 1986), we can make a rough assessment using DOPtot values based on total Fe and S concentrations....

    [...]

Journal ArticleDOI
TL;DR: It appears that distinct microenvironments may exist in marine sediments, where, in one microenvironment, sulfide reacts with Fe oxides locally precipitating Fe sulfide minerals, and in another, Fe reduced and solubilized by microorganisms migrates freely into solution.

983 citations

Journal ArticleDOI
TL;DR: In this paper, the development of a sequential extraction procedure for iron in modern and ancient sediments is presented, which recognizes seven operationally derived iron pools: (1) carbonate associated Fe (Fe carb ), including siderite and ankerite; (2) easily reducible oxides (Fe ox1 ), including ferrihydrite and lepidocrocite; and (3) reducible Oxides(Fe ox2 ), including goethite, hematite and akaganeite, (4) magnetite (Fe mag ); (5)

975 citations

Journal ArticleDOI
TL;DR: In this paper, a survey was made of framboid size distributions in recently deposited sediments from euxinic (Black Sea; Framvaren Fjord, Norway; Pettaquamscutt River Estuary, Rhode Island, USA), dysoxic (Peru Margin), and oxic (Wallops Island, Virginia, USA; Great Salt Marsh, Delaware, USA) environments.

912 citations

References
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Journal ArticleDOI
Robert A. Berner1
TL;DR: In this article, it was shown that organic matter appears to be the major control on pyrite formation in normal (non-euxinic) terrigenous marine sediments where dissolved sulfate and iron minerals are abundant.

2,234 citations

Book
01 Jan 1948
TL;DR: Textbook of quantitative inorganic analysis as discussed by the authors, Textbook of qualitative and quantitative analysis of inorganic properties, textbook of quantitatively analytically-inorganic analysis, as discussed by the authors.
Abstract: Textbook of quantitative inorganic analysis , Textbook of quantitative inorganic analysis , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

2,103 citations

Journal ArticleDOI
11 Feb 1972-Science
TL;DR: The authors' model of the sulfur cycle can draw some conclusions that man is now contributing about one half as much as nature to the total atmospheric burden of sulfur compounds, but by A.D. 2000 he will be contributing about as much, and in the Northern Hemisphere alone he is more than matching nature.
Abstract: Even granting our uncertainties about parts of our model of the sulfur cycle, we can draw some conclusions from it: 1) Man is now contributing about one half as much as nature to the total atmospheric burden of sulfur compounds, but by A.D. 2000 he will be contributing about as much, and in the Northern Hemisphere alone he will be more than matching nature. 2) In industrialized regions he is overwhelming natural processes, and the removal processes are slow enough (several days, at least) so that the increased concentration is marked for hundreds to thousands of kilometers downwind. 3) Our main areas of uncertainty, and ones that demand immediate attention because of their importance to the regional air pollution question, are: (i) the rates of conversion of H(2)S and SO(2) to sulfate particles in polluted as well as unpolluted atmospheres; (ii) the efficiency of removal of sulfur compounds by precipitation in polluted air. And for a better understanding of the global model we need to know: (i) the amount of biogenic H(2)S that enters the atmosphere over the continents and coastal areas; (ii) means of distinguishing man-made and biogenic contributions to excess sulfate in air and precipitation; (iii) the volcanic production of sulfur compounds, and their influence on the particle concentration in the stratosphere; (iv) the large-scale atmospheric circulation patterns that exchange air between stratosphere and troposphere (although absolute amounts of sulfate particles involved are small relative to the lower tropospheric burden); (v) the role of the oceans as sources or sinks for SO(2).

1,111 citations

Journal ArticleDOI
05 Jan 1979-Science
TL;DR: Pyrite formation in salt-marsh peat occurs more rapidly than is generally thought for any natural system, and the rates of sulfate reduction and ecosystem respiration may be grossly underestimated.
Abstract: Pyrite formation in salt-marsh peat occurs more rapidly than is generally thought for any natural system. Pyrite is the major end product of sulfate reduction, and sulfate reduction is the major form of respiration in the salt-marsh ecosystem. When the rapid formation of pyrite is ignored, the rates of sulfate reduction and ecosystem respiration may be grossly underestimated.

307 citations

Book
01 Jan 1968
TL;DR: In this paper, the authors provide an up-to-date treatment of the problems associated with the analysis of geological materials, including the requesite steps from selection of the sample and choice of elements to the facilities needed, preparation of sample, methods for the determination of individual constituens and reporting of the results of the analysis.
Abstract: This indispensable laboratory reference provides the practicing analyst with an up-to-date treatment of the problems associated with the analysis of geological materials. Rock and Mineral Analysis, 2nd Ed. serves as an authoritative guide to the determination of major, minor, and trace elements in rock and minerals, and covers all the requesite steps, from selection of the sample and choice of elements to be determined to facilities needed, preparation of the sample, methods for the determination of individual constituens, and reporting of the results of the analysis. Emphasis in this fully revised and update edition is on the instrumental analysis of rocks and minerals. The new edition thus complements the first edition in which emphasis was largely on the classical wet methods. Here, set forth, on an analyte-by-analyte basis are detailed methods for the determination of: 1) 12 constituents by specific techniques, such as moisture, carbon dioxide and flourine; 2) 30 major, minor, and trace constituents by atomic absorption spectroscopy (AAS); 3) 40 major, minor, and trace constituents by X-ray fluorescence spectroscopy (XRF). The analytes selected are the ones most commonly requested in the analysis of materials. Special attention has been given to new advances in sampling theory, and the previous discussions of standard reference materials and of sample decomposition techniques have been significantly expended.

286 citations